It's not policy change that is the problem, the problem is that nobody can figure out what the current policy is because the CDC is bad at making announcements.

It's not policy change that is the problem, the problem is that nobody can figure out what the current policy is because the CDC is bad at making announcements. Furthermore, there is now widespread suspicion that the CDC's current recommendations are not based on science anymore: for example, the 5-day vs 10-day isolation period. What's especially bad is the advice not to use tests after 5 days, followed a few days later by advice that tests are optional after 5 days -- everyone knows that advice would be different if there were not test shortages. That's not science, that's pragmatism, and that's fine and they ought to just say so, but the CDC continues to make the transparently false claim that their advice is based purely on science. That really hurts the CDC's credibility -- now, when they make an announcement, we all have to ask ourselves whether it's truly based on science. Smart people of all political stripes now realize this. Even the liberal cable TV talking heads are attacking the CDC over this.